docs: def _load_py(self, namespace, config_file):
          """ Load scripted configuration.
          """
          if config_file and os.path.isfile(config_file):
              self.LOG.debug("Loading %r..." % (config_file,))
              exec(compile(open(config_file).read(), config_file, 'exec'),  # pylint: disable=exec-used
                   vars(config), namespace)
          else:
              self.LOG.warning("Configuration file %r not found!" % (config_file,))